The goal of this project is to set up a local network that allows the ground unit to connect to the air unit (UAV), enabling app like: Qground, mission planner to see everything that’s happening with the UAV ( video from camere, telemetry in ap)
companion computer like a Raspberry Pi is really necessary for this purpose, since the setup with a Pi Zero 2, Pi 4, and 2 WiFi modules can cost around $150.
there are any commercial products that provide a solution similar to OpenHD or WiFiBoard that could be a more cost-effective and maintained option, rather than building it from individual components. China have one is SiYi but seem still costly 